Flo Pro Springs
In the early days (89-90) of the flo pros, the local distributor gave me a case of them to try and they worked for about a year and then started failing.... found no springs in any of them. I put springs in and they worked for another year then the solenoids, with their "push in" connections, became a problem. Couldn't use the flow control with them. Had to convert to wired solenoids.